Product Overview
In addition, it is fully compliant with DIN 912 and ISO 4762:1997, and it also meets DIN 912 and ASME B18.3 standards. As a result, it supports cross-border procurement for machinery, automotive, marine, and industrial automation while improving supply chain efficiency and reducing assembly downtime.
Material & Corrosion Resistance
Made from high-quality SUS304 (A2-70) or SUS316 (A4-70) stainless steel, it delivers outstanding corrosion resistance.
Therefore, it is ideal for outdoor structures, chemical plants, offshore platforms, and coastal power installations. The precision knurled cylindrical head enhances manual torque efficiency while maintaining a compact structure.
Furthermore, it is perfect for flush installations or tight spaces such as CNC machines, industrial robots, and precision fixtures.
Mechanical Properties & Manufacturing Process
We apply cold-forging, precision threading, and passivation processes to ensure dimensional consistency, clear thread profiles, and strict compliance with Class A tolerances.
Moreover, the hex drive provides high torque transfer with minimal slippage, which improves both automated assembly and manual maintenance efficiency.
Applications
Available in full-thread and partial-thread configurations, this screw supports sizes ranging from M1.6 to M64.
In this way, it covers applications from lightweight electronics to heavy machinery. Its stainless steel construction ensures long-term durability in humid, corrosive, or temperature-variable environments.
As a result, it helps reduce maintenance and replacement costs over time.
Standards & Compliance
The product complies with GB/T 3098.6 and ISO 3506-1 standards, and each screw is clearly marked to enable easy identification of material grade and performance.
Finally, for global buyers seeking reliable and cost-effective fasteners that bridge regional standard differences, the GB70.1-2000 stainless steel hex socket knurled head screw ensures assembly integrity, operational safety, and supply chain efficiency.
| Category | Specification / Parameter |
|---|---|
| Standard & Compatibility | ISO 4762:1997; Direct replacement for DIN 912 (Germany) & ASME B18.3 (USA); Cross-border compatibility |
| Thread Size & Pitch | M1.6 – M64; ISO 68-1 coarse thread; Pitch 0.35mm (M1.6) – 6mm (M64) |
| Length (Rod) | 4mm – 200mm; Available in full-thread (ISO 8673) & half-thread |
| Material | SUS304 (A2-70): Cr≥18%, Ni≥8%, Neutral salt spray ≥48h SUS316 (A4-70): Mo≥2%, Chloride corrosion resistance 3× higher, Neutral salt spray ≥100h |
| Mechanical Performance | A2-70: Tensile ≥700MPa, Yield ≥450MPa A4-70: Tensile ≥700MPa, Yield ≥450MPa, Elongation ≥12% |
| Head Design | Cylindrical knurled head; Straight or diamond pattern (customizable); Pitch 0.4–1.2mm; Head diameter 1.5–2.2× rod diameter |
| Hex Drive | Width across flats: 1.5mm (M1.6) – 14mm (M64); Socket depth 0.8–1.2× rod diameter; Ensures torque transfer & tight fit |
| Surface Finish | Passivated; Surface roughness Ra ≤0.8μm; Burr-free, crack-free |
| Thread Accuracy | Class 6g |
| Grade & Tolerance | Class A; Head-to-rod coaxiality ≤0.2mm (M1.6–M10), ≤0.3mm (M12–M64); Dimensional tolerances per GB/T 3103.1-2002 (6H/6g) |
| Weight Range | 0.02g (M1.6×4) – 1580g (M64×200) |
| Packaging | Single piece, bulk box (100 pcs/box, 500 pcs/box), or custom packaging |
| Compliance | RoHS certified; Lead & cadmium free; REACH compliant |
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